What is a joint?
Most often, we do not even think about which systems and organs our body consists of, what functions they perform. Although it would be useful to know, because by imagining the functions of certain organs, it is possible, on occasion, to help them more effectively do their work. Now let's talk about what a joint is and tell you about its structure and functions, as well as about those diseases that are possible due to dysfunction.
- A joint is a mobile connection of bones in one or another part of the skeleton. The bones in this place are separated by a gap in which the articular bag and the synovial membrane are located. Due to this structure, bones can move relative to each other, and therefore, human members can make various movements in space.
- The joints are formed by the so-called articular surfaces of the bone-forming epiphyses of the bones (bone extensions), the synovial membrane with the corresponding fluid, which serves as a kind of lubricant and the articular bag - a plate designed to connect the ends of the bones and protect the joint from all sorts of mechanical damage: breaks, impacts, etc. .
- Also, speaking of the joints, it is impossible not to mention the articular ligaments. They serve to strengthen bone joints and to limit the mobility of joints in order to increase their strength and reliability.
- Each joint contains from 3 to 8 arteries through which nutrients are transferred to the articular tissues. The nervous network of the joint provides its innervation (feeling).
- The only part of the joint that does not have nerve endings is the so-called hyaline cartilage covering the epiphyses of the bones. Hyaline cartilage drives and cushions articular surfaces for smooth and efficient work. Now let's talk about the functions of the joints in the body.
Functions of the joints and their violation
As a matter of fact, if the person had no joints, he simply would not be able to move, since the bones would remain motionless. Consequently, the main function of the joints is to ensure the mobility of the bones. Also, one should not underestimate the support function of the joints, because thanks to the joints, a person can create support for his body or for its individual members. If a person overloads the joints or loads them with uniform work, various disorders and even diseases of the joints can occur.Very common, for example, is a deviation such as hypermobility of the joints, in which the articular ligaments stretch and allow the joints to move in much larger amplitude than is necessary for normal operation. As a result, the joint is overloaded, which can lead to changes in tissue composition. In practice, this is expressed in stretch marks on the skin, vascular weakness. If you do not take action, then even a varicose disease may well develop. If a person has hypermobility of the joints, he is not recommended monotonous work for many hours in a row. Hypermobility is often the cause of such unpleasant diseases as arthrosis and varicose veins, and can also lead to serious stretching, especially if a person is actively involved in sports. The useful functions of the joints in the body can not be overestimated, so try to treat them carefully and at the slightest ailments and fatigue, carry out recovery activities.